2024 SID Activities
2023 SID Activities
2021 SID Activities
2019 SID Activities Sep.
2019 SID Activities Jul
the Executive Committee
Activities in Oct. 25, 2024

On the afternoon ofOctober 25, 2024, from 2 PM to 4 PM, the "E Valley * Wudao Theater"in the 4th building of the School of Electronic Information and ElectricalEngineering, Shanghai Jiao Tong University, successfully hosted the SIDShanghai Student Chapter Academic Lecture Event. This event was part of the SIDShanghai Student Chapter's academic lecture series, aiming to provide an openacademic exchange platform for students and researchers to promotecollaboration and innovation.

SID (Society forInformation Display) is a global academic organization committed to advancingdisplay technology. This event, organized by the SID Shanghai Student Chapter,aimed to help more students and researchers understand the latest scientificresearch results in this field.


The event opened with remarks from the host of the SID Shanghai Student Chapter, who briefly introduced SID's history and mission. The audience was then treated to two insightful lectures focused on the advancement of liquid crystal technology by distinguished experts. The first speaker was Professor Kristiaan Neyts from Hong Kong University of Science and Technology (HKUST), who presented on "Patterned photoalignment for nanoscale geometric phase diffractive optics." Professor Neyts discussed the photosensitive properties of Azo-dye materials, which can be used for patterned photoalignment. Complex high-resolution illumination patterns can be realized by interferometry or by projecting pixels of a spatial light modulator, and the patterning can create complex director structures in nematic, cholesteric, blue phase, and ferro-electric nematic liquid crystals, demonstrating the significant potential of photoalignment technology in nanoscale optoelectronic devices.


The second speaker, Professor Vladimir G Chigrinov, also from HKUST, is an expert in the field of liquid crystal photoalign

ment technology. His lecture, titled "Azodye photoaligned nanolayers for liquid crystals: new applications," detailed the longstanding research into photoalignment and photopatterning. He explained how light can deliver energy as well as phase and polarization information to material systems, and how Azo-dye nanolayers provide high-quality molecular alignment in liquid crystal (LC) cells. Professor Chigrinov also highlighted various improvements and new applications of photoalignment and photopatterning technology in photonics, particularly in optical signal processing and communications. He showcased a physical model based on rotational diffusion in solid Azodye nanolayers and discussed new applications in displays and photonics, such as high resolution LC displays, LC sensors, LC lenses, LC E-paper, quantum rods alignment, 100% polarizers,LC smart windows, and LC antenna elements.


After the lectures,participants joined an informal networking dinner where they had theopportunity to engage closely with the two experts. This activity not onlyreinforced the knowledge exchange from the lectures but also inspiredcollaboration intentions among the participants.

This event was not onlya successful activity of the SID Shanghai Student Chapter but also showcasedthe latest advancements in display technology under the guidance of SID.Through these activities, we hope to provide more academic prospects andcollaboration opportunities for the academic community and students.



Activities in Oct. 26, 2023

October 26, 2023 at 9:30 AM

SID Shanghai Student Branch held the student branch Forum in the fourth quarter of 2023, and invited Wang Bo from the 3D Display Laboratory of Shanghai Jiao Tong University to share the academic report of "Multi-plane Near-eye Display Based on Geometric Phase Optics". At the same time, Xu Chao from Shanghai Jiao Tong University was invited to share the academic report of "Holographic near-eye Display based on wave front reconstruction". More than 10 members of SID Shanghai Student Branch attended the presentation. Zhang Han, Chairman of SID Shanghai Student Branch, presided over the meeting.


During the meeting, Bo Wang introduced geometric phase optical devices and their applications in near-eye displays. Due to their polarization dependence, geometric phase lenses can act as concave lenses for left-handed circularly polarized light and convex lenses for right-handed circularly polarized light. They can also allow light to pass through directly by applying a certain voltage. Therefore, by combining two geometric phase lenses with different focal lengths and applying the appropriate voltage, it is possible to control the combined lens to switch between four focal lengths. After understanding the basic principles and properties of geometric phase optical devices, other members showed great interest in the practical applications of this device. Bo Wang mentioned that, there are some issues to be addressed such as chromatic aberration, spherical aberration, and diffraction efficiency before they can be used in practical applications.


Subsequently, Chao Xu introduced a modified unsupervised vision transformer (ViT) network for high-fidelity computer-generated holography. Compared to a conventional CNN-based network (U-Net), our network demonstrates a better capability of capturing global features during CGH calculation. Replacing the self-attention layers with global filter layers makes this modified ViT more efficient to generate phase-only holograms. The participants shared and discussed the details and application prospects enthusiastically.


Finally, the students took a group photo, and the academic report was successfully concluded.


    



Activities in Oct. 18, 2021

At 14:00 on October 18, 2021, a seminar "Learning a Century of Party History with Predecessors and Talking about New Displays with Youth" was held at Holiday Inn Shanghai Jinshan.The speaker of this conference is Liang Xinqing, secretary general of the LCD branch of China Optics and Optoelectronics Industry Association. The guests present at this conference was Professor Baizhe Zhang   of Tsinghua University, Yuanfang Lin , director of the Special Committee of China Electronics Video Association, and Tong   Yuan, vice president of China Electronic Materials Industry Association., Wenjin Xue , Vice President of Nanjing Flat Panel Display Industry Association, Professor Zheng Xu from Beijing Jiaotong University, Professor   Yi Wang from Peking University, etc., and Professor Jiao   Li   from Shanghai University presided over the meeting.More than 20 students attended this conference, from Fudan University, Shanghai Jiaotong University, Tongji University and Shanghai University.

























Activities in Sep. 18, 2019

At 13:30 pm on September 18, 2019, SID Shanghai Student Branch and SID Beijing Branch East District jointly invited Dr. He Ziqian to the conference room 202, Building 1, Telecom Group Building, Minhang Campus, Shanghai Jiao Tong University, to give a title of "The Latest Development of Liquid Crystal Devices"The academic report is also used as the academic exchange meeting of the student branch this quarter.Professor Li Yan and more than ten students from the SID Student Branch attended this academic report meeting, presided over by Li Xiang, the chairman of the SID Shanghai Student Branch.


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Activities in July 26, 2019

At 15:30 pm on July 26, 2019, SID Shanghai Student Branch and SID Beijing Branch East District jointly invited Professor Hu Wei to the atrium conference room on the fourth floor of Building 1, Telecom Group Building, Minhang Campus, Shanghai Jiao Tong University."Optical field control technology and application of oriented liquid crystal" academic report.

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the Executive Committee of Shanghai Student Branch

Position

Name

School

Major

President

Han Zhang

Shanghai University

Machine Engineering

Vice president

Bo Wang

Shanghai Jiaotong University

Electronic information

             Secretary

Zhenyu Tang

Peking University

Optics